Doppler weather radars are capable of providing high quality wind data at a high spatial and temporal resolution.
However, operational application of Doppler velocity data from weather radars is hampered by the infamous limitation
of the velocity ambiguity. This paper reviews the cause of velocity folding and presents the unfolding method recently
implemented for the CINRAD systems. A simple interactive method for velocity data, which corrects de-aliasing errors,
has been developed and tested. It is concluded that the algorithm is very efficient and produces high quality velocity data.